Commuters in London, Britain's capital, will now be able to pay for buses with one tap of their smartphone.

London buses recently stopped accepting cash transactions, and now most customers pay by tapping in with a contactless travel card, known as an Oyster card. But now, rather than pre-load this with credit, users of the EE phone network can board a bus by tapping their smartphone. The payment system is called Cash on Tap and was introduced last year for transactions under 20 pounds - but until now it was not compatible with transport. Additionally, Cash on Tap transactions will cost exactly the same as if it were a payment with an Oyster card.

Users will need an NFC enabled phone and an EE sim card to take full advantage, as well as downloading an app called Tap Wallet from Google Play. It's expected that next month the service will also roll out to the city's iconic metro system, known as the tube.